EP1671024A2 - Method for controlling an electromagnetic valve - Google Patents

Method for controlling an electromagnetic valve

Info

Publication number
EP1671024A2
EP1671024A2 EP04764943A EP04764943A EP1671024A2 EP 1671024 A2 EP1671024 A2 EP 1671024A2 EP 04764943 A EP04764943 A EP 04764943A EP 04764943 A EP04764943 A EP 04764943A EP 1671024 A2 EP1671024 A2 EP 1671024A2
Authority
EP
European Patent Office
Prior art keywords
solenoid valve
opening
current
control valve
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04764943A
Other languages
German (de)
French (fr)
Inventor
Ekkehard KÖHLER
Wolfgang Messerschmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1671024A2 publication Critical patent/EP1671024A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/2017—Output circuits, e.g. for controlling currents in command coils using means for creating a boost current or using reference switching
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2031—Control of the current by means of delays or monostable multivibrators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2034—Control of the current gradient
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2051—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using voltage control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • H01F2007/185—Monitoring or fail-safe circuits with armature position measurement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F2007/1894—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings minimizing impact energy on closure of magnetic circuit

Definitions

  • the invention relates to a method for regulating an opening and / or closing process of a solenoid valve according to the preamble of claim 1.
  • the known solenoid valve has an electromagnet arranged in a housing part, an axially movable armature which is guided in a slider and acted on by a closing spring, and a control valve member which moves with the armature and which cooperates with a valve seat of the solenoid valve and thus the fuel outflow from the control pressure chamber controls.
  • a solenoid valve for controlling an injection valve of an internal combustion engine is also known from DE 101 31 201 AI.
  • DE 196 07 073 AI describes a method and a device for controlling the movement of an armature of an electro- magnetic switching element (or a solenoid valve), which has an excitation winding, described.
  • a first setpoint value for the current can be specified from a first point in time and a second setpoint value for the current can be specified from a second point in time.
  • the second target value is less than, equal to or greater than the first target value and the second point in time lies before a third point in time at which the armature reaches its end position with a solenoid valve needle or the control valve member.
  • P -oblematic in general is that the control valve member or the armature has not yet been precisely regulated during the ballistic phase, that is to say during the flight phase.
  • the line resistance of the supply voltage is a factor that greatly impairs the flight phase, because a high internal resistance can lead to voltage fluctuations. Since the voltage measurement is usually carried out by averaging, voltage drops due to the internal resistance can hardly be determined. Exact current control at any discrete point in time is very complex since, for example, a separate processor would have to be made available for this. Due to these voltage fluctuations, however, the pulling and opening times of the armature or of the control valve element change, as a result of which a closing process or the ballistic phase of the armature disadvantageously cannot be reproduced exactly.
  • the time duration between the times of the previous opening and / or closing process is used as a controlled variable for regulating the current and / or voltage curve in the opening and / or closing process can advantageously precisely regulate the current curve.
  • the solenoid valve closes, the time at which the armature or the control valve member picks up and strikes is already detected, which means that the flight phase or the ballistic phase of the control valve member or the armature can be regulated in a simple manner by means of current - and voltage curve can be adjusted accordingly.
  • the flight phase of the control valve member is thus reproducible up to the point of impact and there is no complex regulation of the current value at any discrete point in time. As a result, production costs can be kept low.
  • the time of impact can also be recorded, as is known.
  • the total duration of the anchor's flight phase can be calculated using these variables. It can thus be reproducibly determined exactly how long the pull-in phase with a high voltage to accelerate the armature, the subsequent second phase with a lower voltage after exceeding a current threshold value until it opens (closing of the solenoid valve) and the holding phase after the opening time.
  • FIG. 1 shows a current flow diagram during the closing process of a solenoid valve with an increased internal resistance of the supply lines with and without a control according to the invention
  • 2 shows a flowchart of an embodiment of the control method according to the invention.
  • a solenoid valve (not shown here) for controlling the fuel injection of an internal combustion engine is known, for example, from DE 196 07 073 AI.
  • An excitation winding or coil of the solenoid valve is in series with a voltage source and at least one controllable switching means, for example a transistor, which is controlled by a control signal from a control signal.
  • the control signal is provided by a motor control.
  • the present exemplary embodiment shows a method for regulating an opening and / or closing process of the solenoid valve, the voltage source during the closing process of the solenoid valve, in which fuel is to be injected into the internal combustion engine, the excitation winding in three phases Pl, P2, P3 (see Fig. 1) supplied with a voltage which varies during each phase P1, P2, P3, as a result of which a control valve member is moved accordingly, in particular via an armature.
  • the voltage can also be modulated differently in the respective phases, for example.
  • a first voltage is applied at time T Be gi nn until a current threshold value, in the present exemplary embodiment numbered 14 amperes, is reached.
  • a current threshold value in the present exemplary embodiment numbered 14 amperes
  • the control valve member starts to move or is accelerated.
  • the voltage in phase P2 is reduced again in order not to accelerate the armature or the control valve member any further.
  • the voltage is kept constant in order to keep the control valve in the open state and the solenoid valve closed.
  • a current curve la is outlined without a temporal control of the phases P1 and P2.
  • a curve b shows a current waveform of the solenoid valve at nominal conditions or with an inventive temporal Einregelung particular phases Pl and P2 on the detected time points T Be beginning, nzug and t Au ftsch •
  • FIG. 2 shows a control method according to the invention as a flow diagram.
  • a step A marks the start of the method, in a step B the start values for the voltage conditions in the phases P1 and P2 are defined.
  • the energization of the solenoid valve begins at time T Be gi ⁇ m.
  • the corresponding voltage for phase P1 is then applied (step D).
  • the suit detection is carried out, ie the measurement of the time A n to g when the current value threshold is reached, after which in a step F the phase P2 is initiated by applying a further changed voltage.
  • a step G the impact detection follows, ie the measurement of the impact time T A schschiag, after which the phase P3 is initiated at a point H.
  • this phase P3 is characterized by an exact current control and represents the so-called holding phase of the solenoid valve.
  • the voltage is switched off quickly or the solenoid valve opens.
  • the resulting time behavior of the current curve remains in the required accuracy, as well as the injection behavior of the internal combustion engine, which is now constant regardless of mechanical and hydraulic disturbances.
  • the solution can easily be implemented by a computer program. An automatic compensation of aging effects and manufacturing variation of the solenoid valves is also achieved.
  • the flight time of the control valve member can be used to diagnose the internal combustion engine.
  • T Due to the constant pick-up and opening times T should be g / T _ impact of the valve of the respective physical beginning of injection is constant, and thus the fuel injected into the cylinder fuel amount, since the injection nozzle is acted upon in time always evenly with pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

The invention relates to a method for controlling an opening and/or closing process of an electromagnetic valve by controlling a flow of a current and/or of a voltage with which a coil of the electromagnetic valve is flowed through or supplied in order to move a control valve element, during which a number of points in time of the opening and/or closing process are detected that result, in particular, from physical characteristic values of the current flow and/or of the electromagnetic valve. The duration between the detected points in time of a preceding opening and/or closing process is used as a controlled variable for controlling the flow of current and/or of voltage during a subsequent opening and/or closing process.

Description

Verfahren zur Regelung eines Magnetventils Method of controlling a solenoid valve
Die Erfindung betrifft ein Verfahren zur Regelung eines Offnungs- und/oder Schließvorgangs eines Magnetventils gemäß dem Oberbegriff von Anspruch 1.The invention relates to a method for regulating an opening and / or closing process of a solenoid valve according to the preamble of claim 1.
Ein' aus der DE 196 50 865 AI bekanntes Magnetventil wird zur Steuerung des Kraftstoffdrucks im Steuerdruckraum eines Ein- spritzventils, beispielsweise eines Injektors einer Common- Rail-Einspritzanlage, verwendet. Bei derartigen Einspritzventilen wird über den Kraftstoffdruck im Steuerdruckraum die Bewegung eines Ventilkolbens gesteuert, mit dem eine Einspritzöffnung des Einspritzventils geöffnet oder geschlossen wird. Das bekannte Magnetventil weist einen in einem Gehäuseteil angeordneten Elektromagneten, einen in einem Gleitstück geführten und von einer Schließfeder beaufschlagten, axialbeweglichen Anker und ein mit dem Anker bewegtes Steuerventil- glied auf, das mit einem Ventilsitz des Magnetventils zusammen wirkt und so den Kraftstoffabfluss aus dem Steuerdruckraum steuert .A 'known from DE 196 50 865 AI solenoid valve for controlling the fuel pressure in the control pressure chamber of a single-injection valve, for example an injector of a common rail injection system used. In such injection valves, the movement of a valve piston, with which an injection opening of the injection valve is opened or closed, is controlled via the fuel pressure in the control pressure chamber. The known solenoid valve has an electromagnet arranged in a housing part, an axially movable armature which is guided in a slider and acted on by a closing spring, and a control valve member which moves with the armature and which cooperates with a valve seat of the solenoid valve and thus the fuel outflow from the control pressure chamber controls.
Ein Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine ist ebenfalls aus der DE 101 31 201 AI bekannt .A solenoid valve for controlling an injection valve of an internal combustion engine is also known from DE 101 31 201 AI.
In der DE 196 07 073 AI ist ein Verfahren und eine Vorrichtung zur Steuerung der Bewegung eines Ankers eines elektro- magnetischen Schaltorgans (bzw. eines Magnetventils) , welches eine Erregerwicklung aufweist, beschrieben. Dabei ist ab einem ersten Zeitpunkt ein erster Soll-Wert für den Strom vorgebbar und ab einem zweiten Zeitpunkt ist ein zweiter Soll- Wert für den Strom vorgebbar. Der zweite Soll-Wert ist kleiner, gleich oder größer als der erste Soll-Wert und der zweite Zeitpunkt liegt vor einem dritten Zeitpunkt, bei dem der Anker mit einer Magnetventilnadel bzw. dem Steuerventilglied seine Endlage erreicht.DE 196 07 073 AI describes a method and a device for controlling the movement of an armature of an electro- magnetic switching element (or a solenoid valve), which has an excitation winding, described. In this case, a first setpoint value for the current can be specified from a first point in time and a second setpoint value for the current can be specified from a second point in time. The second target value is less than, equal to or greater than the first target value and the second point in time lies before a third point in time at which the armature reaches its end position with a solenoid valve needle or the control valve member.
Es ist bekannt, den Aufprall- bzw. AufSchlagzeitpunkt des Ankers durch eine Auswertung des Stromverlaufs zu bestimmen. Des weiteren verwendet man dazu auch Sensoren oder ähnliches.It is known to determine the time of impact or impact of the armature by evaluating the current profile. Furthermore, sensors or the like are also used for this.
P -oblematisch ist im allgemeinen, dass das Steuerventilglied bzw. der Anker während der ballistischen Phase, dass heißt während der Flugphase, bisher nicht genau ausgeregelt wird. Insbesondere der Leitungswiderstand der Versorgungsspannung ist ein Faktor, der die Flugphase stark beeinträchtigt, denn ein hoher Innenwiderstand kann zu SpannungsSchwankungen führen. Da die Spannungsmessung in der Regel durch Mittelwert- bildung erfolgt, können Spannungseinbrüche durch den Innenwiderstand kaum festgestellt werden. Eine exakte Stromregelung zu jedem diskreten Zeitpunkt ist sehr aufwendig, da hierfür zum Beispiel ein eigener Prozessor zur Verfügung gestellt werden müsste. Durch diese SpannungsSchwankungen verändern sich jedoch Anzugs- und AufSchlagszeitpunkt des Ankers bzw. des Steuerventilglieds, wodurch ein Schließvorgang bzw. die ballistische Phase des Ankers in nachteilhafter Weise nicht exiakt reproduzierbar wird. Insbesondere bei genauen Anforderungen, zum Beispiel bei der Steuerung der Einspritzung in einer Brennkraftmaschine, ist dies problematisch, da der physikalische Einspritzbeginn jeweils zu einem anderen Zeitpunkt stattfindet als geplant. Dies führt zu Änderungen der in den Zylinder eingespritzten KraftStoffmenge, was wiederum zu einer ungewollten Änderung des Motordrehmoments führt.P -oblematic in general is that the control valve member or the armature has not yet been precisely regulated during the ballistic phase, that is to say during the flight phase. In particular, the line resistance of the supply voltage is a factor that greatly impairs the flight phase, because a high internal resistance can lead to voltage fluctuations. Since the voltage measurement is usually carried out by averaging, voltage drops due to the internal resistance can hardly be determined. Exact current control at any discrete point in time is very complex since, for example, a separate processor would have to be made available for this. Due to these voltage fluctuations, however, the pulling and opening times of the armature or of the control valve element change, as a result of which a closing process or the ballistic phase of the armature disadvantageously cannot be reproduced exactly. This is problematic in particular in the case of precise requirements, for example when controlling the injection in an internal combustion engine, since the physical start of the injection takes place at a different point in time takes place as planned. This leads to changes in the amount of fuel injected into the cylinder, which in turn leads to an undesired change in the engine torque.
Es ist daher die Aufgabe der vorliegenden Erfindung, ein Verfahren zur Regelung des Offnungs- und/oder Schließvorgangs eines Magnetventils der eingangs erwähnten Art zu schaffen, welches die Nachteile des Standes der Technik beseitigt und einen reproduzierbaren Offnungs- und oder Schließvorgang eines Magnetventils ermöglicht.It is therefore the object of the present invention to provide a method for regulating the opening and / or closing process of a solenoid valve of the type mentioned at the outset, which eliminates the disadvantages of the prior art and enables a reproducible opening and / or closing process of a solenoid valve.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale von Anspruch 1 gelöst .This object is achieved according to the invention by the characterizing features of claim 1.
Dadurch, dass als Regelgröße zur Regelung des Strom- und/oder Spannungsverlaufs bei dem Offnungs- und/oder Schließvorgang die zeitliche Dauer zwischen den Zeitpunkten des vorhergehenden Offnungs- und/oder Schließvorgangs verwendet wird, kann in vorteilhafter Weise eine genaue Einregelung des Stromverlaufs erfolgen. Insbesondere werden beim Schließvorgang des Magnetventils Anzugs- und AufSchlagszeitpunkt des Ankers bzw. des Steuerventilglieds bereits erfasst, wodurch eine Regelung der Flugphase bzw. der ballistischen Phase des Steuerventil- glieds bzw. des Ankers mit diesen bereits erfassten Werten in einfacher Weise erfolgen kann, indem Strom- und Spannungsverlauf entsprechend angepasst werden. Somit wird die Flugphase des Steuerventilglieds bis zum AufSchlagszeitpunkt reproduzierbar und es rauss keine aufwendige Regelung des Stromwertes zu jedem diskreten Zeitpunkt erfolgen. Dadurch können Produktionskosten niedrig gehalten werden.The fact that the time duration between the times of the previous opening and / or closing process is used as a controlled variable for regulating the current and / or voltage curve in the opening and / or closing process can advantageously precisely regulate the current curve. In particular, when the solenoid valve closes, the time at which the armature or the control valve member picks up and strikes is already detected, which means that the flight phase or the ballistic phase of the control valve member or the armature can be regulated in a simple manner by means of current - and voltage curve can be adjusted accordingly. The flight phase of the control valve member is thus reproducible up to the point of impact and there is no complex regulation of the current value at any discrete point in time. As a result, production costs can be kept low.
Insbesondere kann erfasst werden, wann die Anzugsphase des Steuerventilglieds vorüber ist (z.B. bei Überschreitung eines Stromschwellenwertes) , ebenfalls kann wie bekannt der Aufschlagzeitpunkt erfasst werden. Mit diesen Größen kann die Gesamtdauer der Flugphase des Ankers errechnet werden. Somit kann reproduzierbar genau bestimmt werden, wie länge die Anzugsphase mit einer hohen Spannung zur Beschleunigung des Ankers, die danach folgende zweite Phase mit einer geringeren Spannung nach Überschreiten eines Stromschwellwerts bis zum Aufschlag (Schließen des Magnetventils) und die Haltephase nach dem AufSchlagsZeitpunkt dauert.In particular, it can be recorded when the tightening phase of the control valve member is over (for example when one of the control valves is exceeded Current threshold value), the time of impact can also be recorded, as is known. The total duration of the anchor's flight phase can be calculated using these variables. It can thus be reproducibly determined exactly how long the pull-in phase with a high voltage to accelerate the armature, the subsequent second phase with a lower voltage after exceeding a current threshold value until it opens (closing of the solenoid valve) and the holding phase after the opening time.
Bei einem Einsatz der Regelung in einer Brennkraftmaschine zur Steuerung einer Einspritzung kann auf diese Weise ein konstantes Zeitverhalten der Magnetventile und dadurch bedingt ein reproduzierbarer physikalischer Einspritzbeginn bei der Einspritzung erreicht werden. Die in die Zylinder eingespritzte Kraftstoffmenge bleibt, genauso wie das Motordrehmoment, konstant. Zusätzlich können Serienstreuungen von Magnetventilen durch diese Ansteuerung bzw. Regelung ausgeglichen werden. Die mechanischen und elektrischen Toleranzen der bei der Einspritzung häufig verwendeten Steckpumpen werden berücksichtig und ausgeregelt.When the control is used in an internal combustion engine to control an injection, a constant time behavior of the solenoid valves and thus a reproducible physical start of injection can be achieved in the injection. The amount of fuel injected into the cylinders remains constant, as does the engine torque. In addition, series control of solenoid valves can be compensated for by this control. The mechanical and electrical tolerances of the plug-in pumps that are frequently used for injection are taken into account and corrected.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen. Nachfolgend ist anhand der Zeichnung prinzipmäßig ein Ausführungsbeispiel beschrieben.Advantageous refinements and developments of the invention result from the subclaims. An embodiment is described in principle below with reference to the drawing.
Es zeigt :It shows :
Fig. 1 ein Stromverlaufsdiagramm während des Schließvorgangs eines Magnetventils bei einem erhöhten Innenwiderstand der Versorgungsleitungen mit und ohne eine erfindungsgemäße Regelung; und Fig. 2 ein Flussdiagramm einer Ausführungsform des erfindungsgemäßen Regelungsverfahrens .1 shows a current flow diagram during the closing process of a solenoid valve with an increased internal resistance of the supply lines with and without a control according to the invention; and 2 shows a flowchart of an embodiment of the control method according to the invention.
Bekannt ist der Einsatz eines hier nicht dargestellten Magnetventils zur Steuerung der Kraftstoffeinspritzung einer Brennkraftmaschine beispielsweise aus der DE 196 07 073 AI. Eine Erregerwicklung bzw. Spule des Magnetventils liegt in Reihe mit einer Spannungsquelle und mindestens einem steuerbaren Schaltmittel, beispielsweise einem Transistor, der von einer Steuer- und Regeleinheit entsprechend von einem Steuersignal angesteuert wird. Das Steuersignal wird von einer Motorregelung bereit gestellt.The use of a solenoid valve (not shown here) for controlling the fuel injection of an internal combustion engine is known, for example, from DE 196 07 073 AI. An excitation winding or coil of the solenoid valve is in series with a voltage source and at least one controllable switching means, for example a transistor, which is controlled by a control signal from a control signal. The control signal is provided by a motor control.
Das vorliegende Ausführungsbeispiel zeigt ein Verfahren zur Regelung eines Offnungs- und/oder Schließvorgangs des Magnetventils, wobei die Spannungsquelle beim Schließvorgang des Magnetventils, bei dem Kraftstoff in die Brennkraftmaschine eingespritzt werden soll, die Erregerwicklung in drei Phasen Pl, P2, P3 (siehe Fig. 1) mit einer Spannung versorgt, welche während jeder Phase Pl, P2 , P3 , variiert, wodurch ein Steuerventilglied insbesondere über einen Anker entsprechend bewegt wird. In anderen Ausführungsbeispielen kann die Spannung beispielsweise auch in den jeweiligen Phasen verschieden moduliert werden.The present exemplary embodiment shows a method for regulating an opening and / or closing process of the solenoid valve, the voltage source during the closing process of the solenoid valve, in which fuel is to be injected into the internal combustion engine, the excitation winding in three phases Pl, P2, P3 (see Fig. 1) supplied with a voltage which varies during each phase P1, P2, P3, as a result of which a control valve member is moved accordingly, in particular via an armature. In other exemplary embodiments, the voltage can also be modulated differently in the respective phases, for example.
In der ersten Phase, welche die Anzugsphase des Steuerventil- glieds bzw. des Ankers des Magnetventils beschreibt, wird eine erste Spannung zum Zeitpunkt TBeginn angelegt, bis ein Stromschwellenwert, im vorliegenden Ausführungsbeispiel mit 14 Ampere beziffert, erreicht ist. Dadurch setzt sich das Steuerventilglied in Bewegung bzw. wird beschleunigt. Nach Erreichen des Anzugzeitpunktes (d.h. des Stromschwellenwerts) wird die Spannung in der Phase P2 wieder gesenkt, um den Anker bzw. das Steuerventilglied nicht weiter zu beschleunigen. Nach dem Aufschlag des Steuerventilglieds zum Zeitpunkt TAufschιag in der Phase P3 wird die Spannung konstant gehalten, um das Steuerventil im Aufschlagszustand und das Magnetventil dabei geschlossen zu halten.In the first phase, which describes the tightening phase of the control valve member or the armature of the solenoid valve, a first voltage is applied at time T Be gi nn until a current threshold value, in the present exemplary embodiment numbered 14 amperes, is reached. As a result, the control valve member starts to move or is accelerated. After reaching the pull-in time (ie the current threshold value), the voltage in phase P2 is reduced again in order not to accelerate the armature or the control valve member any further. After opening the control valve member to Time T Aufsch ι ag in phase P3, the voltage is kept constant in order to keep the control valve in the open state and the solenoid valve closed.
In Figur 1 ist eine Stromverlaufskurve la ohne eine zeitliche Regelung der Phasen Pl und P2 skizziert. Eine Kurve lb zeigt einen Stromverlauf des Magnetventils bei Nominalverhältnissen oder mit einer erfindungsgemäßen zeitlichen Einregelung insbesondere der Phasen Pl und P2 über die detektierten Zeitpunkte TBeginn, nzug Und TAufschlag •In Figure 1, a current curve la is outlined without a temporal control of the phases P1 and P2. A curve b shows a current waveform of the solenoid valve at nominal conditions or with an inventive temporal Einregelung particular phases Pl and P2 on the detected time points T Be beginning, nzug and t Au fschlag •
In Figur 2 ist ein erfindungsgemäßes Regelungsverfahren als Flussdiagramm dargestellt. Dabei kennzeichnet ein Schritt A den Start des Verfahrens, in einem Schritt B werden die Startwerte für die Spannungsverhältnisse in den Phasen Pl und P2 festgelegt. In einem Schritt C erfolgt der Bestromungsbe- ginn des Magnetventils zum Zeitpunkt TBegiιm- Anschließend wird die entsprechende Spannung für die Phase Pl angelegt (Schritt D) . In einem Schritt E erfolgt die Anzugserkennung, d. h. die Messung des Zeitpunkts Anzug über das Erreichen der Stromwertschwelle, wonach in einem Schritt F die Phase P2 durch Anlegen einer weiteren veränderten Spannung eingeleitet wird. In einem Schritt G folgt die AufSchlagserkennung, d. h. die Messung des AufSchlagsZeitpunktes TAufschiag, wonach in einem Punkt H die Phase P3 eingeleitet wird. Diese Phase P3 ist im vorliegenden Ausführungsbeispiel durch eine exakte Stromregelung gekennzeichnet und stellt die sogenannte Haltephase des Magnetventils dar. Danach folgt in einem Schritt I die Schnellabschaltung der Spannung bzw. eine Öffnung des Magnetventils. In einem Schritt J wird die Dauer der Flugphase des Steuerventilglieds TFιug = TAufschiag - TAnzug berechnet und diese in einem Schritt K zur Regelung und in einem Schritt L zur Bestimmung neuer Spannungsverhältnisse für die Phasen Pl und P2 verwendet, wonach in Schritt D wieder ein erneuter Bestro- mungsbeginn mit den neuen Spannungsverhältnissen zur konstanten Einregelung von TAnzug und TAUfschiag erfolgen kann. Das resultierende Zeitverhalten des Stromverlaufs bleibt dadurch in der geforderten Genauigkeit, ebenso das Einspritzverhalten der Brennkraftmaschine, welches nun unabhängig von mechanischen- und hydraulischen Störgrößen konstant ist. Die Lösung kann leicht durch ein Computerprogramm umgesetzt werden. Eine automatische Kompensierung von Alterungseffekten und Fertigungsstreuungen der Magnetventile wird zudem erreicht. Die Flugzeit des Steuerventilglieds kann zur Diagnostik der Brennkraftmaschine herangezogen werden.FIG. 2 shows a control method according to the invention as a flow diagram. A step A marks the start of the method, in a step B the start values for the voltage conditions in the phases P1 and P2 are defined. In a step C, the energization of the solenoid valve begins at time T Be giιm. The corresponding voltage for phase P1 is then applied (step D). In a step E, the suit detection is carried out, ie the measurement of the time A n to g when the current value threshold is reached, after which in a step F the phase P2 is initiated by applying a further changed voltage. In a step G, the impact detection follows, ie the measurement of the impact time T A schschiag, after which the phase P3 is initiated at a point H. In the present exemplary embodiment, this phase P3 is characterized by an exact current control and represents the so-called holding phase of the solenoid valve. Then in a step I, the voltage is switched off quickly or the solenoid valve opens. In a step J the duration of the flight phase of the control valve member T F ι ug = T Aufsch iag - TAnzug is calculated and used in a step K for regulation and in a step L for determining new voltage ratios for the phases P1 and P2, after which in step D the current can be started again with the new voltage ratios for constant adjustment of T suit and T switch . The resulting time behavior of the current curve remains in the required accuracy, as well as the injection behavior of the internal combustion engine, which is now constant regardless of mechanical and hydraulic disturbances. The solution can easily be implemented by a computer program. An automatic compensation of aging effects and manufacturing variation of the solenoid valves is also achieved. The flight time of the control valve member can be used to diagnose the internal combustion engine.
Durch die konstanten Anzugs- und AufSchlagsZeiten TAnzug/ TAuf_ schlag des Ventils bleibt der jeweilige physikalische Spritzbeginn konstant und somit auch die in die Zylinder eingespritzte Kraftstoffmenge, da die Einspritzdüse immer zeitlich gleichmäßig mit Druck beaufschlagt wird. Due to the constant pick-up and opening times T should be g / T _ impact of the valve of the respective physical beginning of injection is constant, and thus the fuel injected into the cylinder fuel amount, since the injection nozzle is acted upon in time always evenly with pressure.

Claims

Patentansprüche claims
1. Verfahren zur Regelung eines Offnungs- und/oder Schließvorgangs eines Magnetventils durch Regelung eines Verlaufs eines Stroms und/oder einer Spannung mit welchen eine Spule des Magnetventils zur Bewegung eines Steuerventilglieds durchströmt bzw. versorgt wird, wobei mehrere Zeitpunkte des Offnungs- und/oder Schließvorgangs de- tektiert werden, welche sich insbesondere aus physikalischen Kennwerten des Stromverlaufs und/oder des Magnetventils ergeben, d a d u r c h g e k e n n z e i c h n e t , dass als Regelgröße zur Regelung des Strom- und/oder Spannungsverlaufs bei dem Offnungs- und/oder Schließvorgang die zeitliche Dauer zwischen den detektierten Zeitpunkten ( BeginAAnzug/TAufschlag) des vorhergehenden Offnungs- und/oder Schließvorgangs verwendet wird.1. A method for regulating an opening and / or closing process of a solenoid valve by regulating a profile of a current and / or a voltage with which a coil of the solenoid valve is flowed through or supplied to move a control valve member, with several times of the opening and / or Closing process are detected, which result in particular from physical characteristics of the current profile and / or the solenoid valve, characterized in that the time duration between the detected times as a control variable for controlling the current and / or voltage profile during the opening and / or closing process (be Gina A nzug / T sch l ag) of the preceding opening and / or closing operation is used.
2. Verfahren nach Anspruch 1, d a du r c h g e k e n n z e i c h n e t , dass ein erster detektierter Zeitpunkt (TBeginrι) den Start der Bestromung und/oder der Spannungsversorgung der Spule zum Anzug des Steuerventilglieds des Magnetventils markiert .2. The method according to claim 1, since you rchgek characterized in that a first detected time (T Beg inrι) marks the start of the energization and / or the voltage supply to the coil to attract the control valve member of the solenoid valve.
3. Verfahren nach Anspruch 2 , d a du r c h g e k e n n z e i c h n e t , dass ein zweiter detektierter Zeitpunkt (TAnzug) das Ende der Anzugsphase nach Erreichen eines Stromschwellenwerts und den Start der AufSchlagphase des Steuerventilglieds des Magnetventils markiert .3. The method according to claim 2, since you rch marked, that a second detected time (T tightening) marks the end of the tightening phase after reaching a current threshold value and the start of the opening phase of the control valve member of the solenoid valve.
4. Verfahren nach Anspruch 1 , 2 oder 3 , d a d u r c h g e k e n n z e i c h n e t , dass ein dritter detektierter Zeitpunkt (TAUfSchiag) den Aufschlag des Steuerventilglieds beim Schließen des Magnetventils markiert .4. The method according to claim 1, 2 or 3, characterized in that a third detected time (T AUfS c h iag) marks the impact of the control valve member when the solenoid valve closes.
5. Verfahren nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t , dass die Regelung während der ballistischen Phase des Steuerventilglieds zwischen dem ersten detektierten Zeitpunkt (TBeginn) und dem dritten detektierten Zeitpunkt (TAufschlag) erfolgt.5. The method according to any one of claims 1 to 4, characterized in that the regulation takes place during the ballistic phase of the control valve member between the first detected time (T Be gi nn ) and the third detected time (T A surcharge).
6. Verfahren nach einem der Ansprüche 1 bis 5, welches bei der Kraftstoffeinspritzung einer Brennkraftmaschine eingesetzt wird.6. The method according to any one of claims 1 to 5, which is used in the fuel injection of an internal combustion engine.
7. Verfahren nach Anspruch 6 , d a d u r c h g e k e n n z e i c h n e t , dass die Regelgröße als Diagnosewert für die Brennkraftmaschine verwendet wird. 7. The method according to claim 6, d a d u r c h g e k e n n e e i c h n e t that the controlled variable is used as a diagnostic value for the internal combustion engine.
EP04764943A 2003-10-07 2004-09-08 Method for controlling an electromagnetic valve Withdrawn EP1671024A2 (en)

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DE10347056A DE10347056A1 (en) 2003-10-07 2003-10-07 Method for controlling a solenoid valve
PCT/EP2004/010000 WO2005038827A2 (en) 2003-10-07 2004-09-08 Method for controlling an electromagnetic valve

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Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007059117A1 (en) * 2007-12-07 2009-06-10 Robert Bosch Gmbh Method for operating an injection valve
WO2009135519A1 (en) * 2008-05-09 2009-11-12 Siemens Aktiengesellschaft Method and device for controlling a magnetic actuator
US8671973B2 (en) * 2009-01-21 2014-03-18 Hitachi Metals, Ltd. Mass flow controller hysteresis compensation system and method
DE102009003214A1 (en) * 2009-05-19 2010-11-25 Robert Bosch Gmbh Method for operating a fuel injection valve of an internal combustion engine and control unit for an internal combustion engine
EP2375041A3 (en) * 2010-04-08 2018-04-04 Delphi Technologies, Inc. System and method for controlling an injection time of a fuel injector
DE102010018290B4 (en) 2010-04-26 2016-03-31 Continental Automotive Gmbh Electrical control of a valve based on a knowledge of the closing time of the valve
DE102010022536A1 (en) * 2010-06-02 2011-12-08 Continental Automotive Gmbh Method and device for controlling a valve
BR112013006966A2 (en) * 2010-09-23 2016-07-26 Int Engine Intellectual Prop Method for controlling the operation of an intensifying piston in a fuel injector
DE102010041880B4 (en) 2010-10-01 2022-02-03 Vitesco Technologies GmbH Determining the ballistic trajectory of an electromagnetically driven armature of a coil actuator
FR2975436B1 (en) 2011-05-20 2015-08-07 Continental Automotive France DIRECT ADAPTIVE FUEL INJECTION SYSTEM
DE102012209965A1 (en) * 2012-06-14 2013-12-19 Robert Bosch Gmbh Method for operating a valve
EP3072138A4 (en) * 2013-11-20 2017-06-21 Eaton Corporation Solenoid and associated control method
US8968140B1 (en) * 2014-03-07 2015-03-03 Ramsey Winch Company Electronically actuated clutch for a planetary winch
DE102016208492B3 (en) * 2016-05-18 2017-08-17 Continental Automotive Gmbh Method for operating a fuel injector with idle stroke

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4341797A1 (en) * 1993-12-08 1995-06-14 Bosch Gmbh Robert Method and device for controlling an electromagnetic consumer
GB9420617D0 (en) * 1994-10-13 1994-11-30 Lucas Ind Plc Drive circuit
GB9509610D0 (en) * 1995-05-12 1995-07-05 Lucas Ind Plc Fuel system
US5515830A (en) * 1995-05-22 1996-05-14 Kokusan Denki Co., Ltd. Fuel injection equipment for internal combustion engine
DE19607073A1 (en) * 1996-02-24 1997-08-28 Bosch Gmbh Robert Method for controlling the movement of an armature of an electromagnetic switching element
DE19650865A1 (en) 1996-12-07 1998-06-10 Bosch Gmbh Robert magnetic valve
JP3707210B2 (en) * 1997-07-22 2005-10-19 いすゞ自動車株式会社 Fuel injection control device
US6292345B1 (en) * 1998-09-02 2001-09-18 Siemens Aktiengesellschaft Method for controlling an electromechanical actuator
JP2001173468A (en) * 1999-12-17 2001-06-26 Honda Motor Co Ltd Control method for solenoid valve device for internal combustion engine
FR2813642B1 (en) * 2000-09-04 2002-12-20 Siemens Automotive Sa METHOD OF CONTROL OF THE QUANTITY OF FUEL INJECTED IN A DIRECT INJECTION INTERNAL COMBUSTION ENGINE
US6923161B2 (en) * 2002-03-28 2005-08-02 Siemens Vdo Automotive Corporation Fuel injection timer and current regulator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005038827A2 *

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JP2007507646A (en) 2007-03-29

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